Look, I don't ask much (well, that's not actually true, but work with me here...). The very least is, when offering a social network, and giving me the option to connect with another person on the network...let me connect?
Case in point: LinkedIn. Great resource, excellent product. Xobni alerts me that there is someone I get e-mail from whom I can connect with on LinkedIn. I click through, get the LinkedIn page for the person, define how I know her, and click Connect. What do I get? A page refresh, and an error that says" We're sorry, but you cannot send this invitation." No explanation. No reason, just that. It would be one thing if I only got it once, but this must happen at least once a week. In the parlance of the day, Fail.
Anyone else experiencing this?