On my social networking site, one field was overlooked in terms of being updated to user's profile, when new members register. I guess the developer dealt with too many fields and overlooked one field. So, I guess it could be easily fixed.
Then also, when members send emails to the recipients, instead of attaching sender's photograph to email, the developer attached recipient's photograph in the email, so the recipient saw herself there. The developer added wrong person's photograph in email template.
Just these 3 bugs only, and I hope and I believe they can be quickly fixed.I also hope to market the site soon.
By the way, only 2 email templates that were carrying recipient's photo (instead of the sender's photo). The other emails don't have this problem.