Thoughtful answer Moonomo. And I agree with everything you say.
I guess, for me, is someone here invites me to be a 'friend' and they have 1000 friends, it seems pretty likely that they're on a kind of quest to have lots of friends, lots of 'followers', and probably they're not too interested in who you are or what your blog is like. It seems to me kind of like an insurance salesman (no offense to any insurance salesmen out there) handing out their cards to everyone they meet. I think it's unlikely that someone with 1000 friends or following 1000 people is doing anything other than a kind of bloggers trick. (Although I don't really understand what they gain from it).
If I referring to your question, in real life I would be friend with someone who has 1000 friends (I don't think I can count his friends in real life) if he/she is genuine and has such qualities to be a friend of mine. But it takes time to be a real friend. So @ first I don't say he/she is my friend and I ll be friendly. However I don't think I can find a person with 1000 friends out there. Here, @ Bloggers its different for me :) Here I take being friends as to know more people. Actually blogs and what they are about. N I can notify activities of them, so it would give more clear picture about someone's intentions. I don't think personal details or professions really matters here. Mostly they are marketing bios. To promote themselves. Then each time I visit here, I go through friends list and check their blogs. If I found an interesting blog, I review, vote and message them if something broken there. So mostly few of them deserved to be followed (not the person, but blog) and get voted. I make good friends here for me, but I don't say it's my Bloggers friends list. But I think each person has unique something N everyday I can learn something by being with them here.
Social Networks are places to find new faces, but it doesn't mean they are real friends at all :) But it is helpful to gain more exposure and experiences we have never had before. Just need to use the tool wisely, don't let tool to manage you.
Welcome to bloggers! This is a nice place. In my opinion the best way to make friends (that mean anything) is to find blogs that you like. I.e., visit some of the blogs that seem interesting. Perhaps even leave comments. Follow the ones that you're really interested in. Then when you invite that blogger to be a friend, they'll know that you're not just playing a promotional trick. On the other hand, if you're interested in promotional games, I suppose you can exchange 'friends' and 'follows' with more-or-less anonymous people. I'd let the 'friends' evolve and grow naturally as you would in real life. But there's two 'camps' on this topic. (I hope you choose the more authentic one).