I have searched for my name in Google and the top results include: a female voice-over artist; an actress; four LinkedIn profiles (none of which are me); a couple of Facebook profiles (one of which could be me) and; a Twitter account (which definitely isn't me). Not very impressive. However, if I did create a Twitter account, or a LinkedIn profile, how would I differentiate myself from the few that already exist in my name?
I then searched for my name and my place of work - a little more success here! This time the first few entries do refer to me: the first is one of my postings in the LisLink mailing list archive; the others relate to CoFHE LASEC meetings I have attended. If I searched for the name of my blog it turns up third in the list - I think I should be able to help bump this up by adding the name of my place of work to my blog. To help develop my online professional presence I can investigate creating a LinkedIn profile.
One of the things you need to consider when developing your online brand is how other people are going to be searching for or finding you - remember to include keyword labels such as library, or your name or place of work to try and make sure you turn up in any search you feel you ought to.