The past two days, we’ve seen a wide variety of companies presenting at TechCrunch50 somehow make use of Facebook — some built apps or used Pages, some accessed profile data, the news stream or photos through Connect. Here’s a quick review of what we saw, in chronological order, including links to other sites that have covered the companies in more detail.
SealTale: This doesn’t seem like a new idea. SealTale lets you place an endorsement widget on a web page, including a simple frame on Facebook. More on CNET.
Udorse: An endorsement site where people can endorse items in their Facebook photos, potentially convincing friends to buy them as well. More on TechCrunch.
Refmob: Cross-site service where people can get paid for referring their friends to jobs; includes a way to refer Facebook friends. More on VentureBeat.
Mota Motors: Used car marketplace site that accesses Connect to let buyers and sellers include their real Facebook profile photos. More on SocalTech.