For those of you who know what I'm talking about, does Google see these as backlinks or not, because they are in an iframe and I can't actually see my site's link in the source code .
The tagboxes load in a iframe, so they still show up in a Google cache and provide good traffic, but they are not the best for link building. You can read my posts about Oggix, Tagbox, and cBox. They still provide great links that bring a lot of traffic, but they provide little benefit to search engine optimization.