Most of these programs allow you to place a search box on your site which is connected to their engine or directory, and are typically paid on a per-search or per-click basis.

Clicksor - Mainly focused on contextual keyword links. Also offers contextual text banners, graphic banners, popunders, XML feeds, and a search box. Min $50 for check, Min $20 for PayPal, Net 15. We use this network, and will update when we receive the first payment.

7Search - Search engine including paid listings. Also can promote your own banners in lieu of cash payment (similar to a banner exchange.) International affiliates OK.

ABC Search - Offers a search box, or a plug-n-play XML feed. Net 45, by check or PayPal.

Ad Median - Offers banners, pops, search boxes, and domain parking. Two tier. No minimum traffic requirement. Net 30. International publishers OK.

Ad On Network - Banners, popunders, and interstitials, along with search listings. They call some ads, "cost Per View," but it appears that that actually requires a click-through. Also offers a "private label" system for publishers to create their own advertiser accounts. Net 30, minimum $200. International publishers OK.

Affiliate Boss - Owned by the Find-It Quick search engine. Seems to focus on CPC text links, banners, and search boxes. Also offers popunders at $1 CPM.

Aim Clicks - Owned by Aquarius Media Services. Banners and search boxes. Minimum payment $35, Net 30. Payments via check, Paypal, or E-gold. International publishers OK.

Blow Search - Search boxes, XML feeds, keyword links, and other options. Net 45, minimum $100, by check. Paypal with a $5 fee, and wire transfer with a $40 fee.

Brain Fox - Several linking formats, including XML feeds. Net 45, minimum $50, by check or PayPal. International publishers OK, with some exceptions.

Canada.com - A Canadian-oriented engine.

CPASE - They focus on paying on a CPA / Affiliate basis, for conversions that come from the search links. Higher performing publishers may qualify for CPC. Requires a minimum of 250 unique visitors per day. Two tier. Net 20, minimum $20, in US Dollars, Euro, Japanese Yen, or UK Pounds via PayPal only.

eClickz - Search boxes and dynamic search feeds. Two tier for referring new advertisers. Net 30, minimum $50.

Find It Online - They sell listings on their NZ oriented search directory. Net 20, by bank account direct credit. Their signup form only accepts NZ and Australian addresses.

Find it Quick - Search boxes, plus banners and popunders with links. International publishers OK, but they only pay for US traffic.

GoClick - A pay-per-click search engine with a search-box affiliate program and a CPM pop-under ad program.

Home Popular - Offers paid search boxes for their home and garden themed search engine. Requires a minimum of 500 unique visitors per day to your site.

Kandoodle - Display results from their pay per click search engine. International publishers OK.

Mamma.com - Meta search engine.

MixCat Interactive - PPC search boxes. International publishers OK.

Pocket Flier - They seem to pay a bounty on signing up new advertisers for their search engine. Net 15, minimum $25. Pays in money or credit to your advertiser account. International publishers OK.

Quest Seek - Two tier. Net 30, minimum $100.

Search Feed - Two tier.

Search Referral - Allows search boxes or text links. Uses search results from the Search 123 pay-per-click search engine and pays 50% of click-through revenue for high bid terms, or a flat 3¢ for low bid terms.

Search Revenue - Pays 6¢ per search with customizable search boxes and approved text links. Non-US webmasters OK.

Search Traffic - Defunct.

Sensis - CPC contextual links and search boxes. International publishers OK, but they are focused on Australian audiences. They also have Sensis Media Smart, but that site seems to only include information for advertisers.

Snooply - Offers 45% of bided listings, per click. Customizable search boxes, and text links. Results are drawn from various pay-per-click search engines. Some non-US publishers OK, with many exceptions. However, we strongly suggest that you do some research here, before signing up.

Specific Media - Various formats (banners, streaming video, integrated search, co-registration, and email marketing) and payment structures (CPM, CPC, and CPA.) Requires at least 100,000 impressions per month. Net 30. Their signup form only gives address options for US and Canada.

Subjex - Generates pre-loaded queries based on page content. Commissions paid on sales at merchants arrived at via the search box.

Trusty Hound - Also features page-saving and RSS publisher lead programs.

US City Network - This national directory of businesses pays commissions for referring business owners that purchase a listing.

Use Who - Two tier. Net 20, minimum £25. Based in the UK, but international publishers OK.

Valid Click - Their Direct Ads "white label" product lets you solicit advertisers directly. They especially emphasize their click fraud protection system. Net 25, by check or ACH deposit. Owned by Think Partnership, Inc.

Vivísimo - Seems to offer a feed for publishers to display their search engine results (related to Clusty) while sharing revenue from sponsored listings. International publishers OK.

WebCity.ca - Canadian web directory. Non-Canadian affiliates OK.

Yoho - Search boxes and some kind of directory feed.