First of all, the interface on myBloglog is easy, quick and userfriendly. You can join even if you do not have a website or are not planning to have one. It is all encompassing, idiot proof.
2nd, membership is free and you can easily browse other social contacts in one pageview.
3rd, you can access to member’s profile and website without any hassle.
4th, you can receive and send private messages which gives your perimeters to build around as you develop your social network.
5th, members can send mass messages to their communities at one click of the button.
6th, there is freedom of membership with other contacts; join or leave, add or remove. Very nice and no parties are hurt as you still have many left to work with if anyone leaves you.
7th, nobody likes to leave or remove you from their list because everybody wants the exposure. Bottom line, nobody loses, everybody wins.
8th, the numbers on your homepage encourages you: successful bloggers always talk about numbers – traffic, messages, subscriptions, incoming links, backlinks, - more the merrier. And myBloglog does an excellent job at telling you there is progress on your social networking. Even if you have 1 message today, it is coded red.
9th, it does not forget that you want to succeed. If a member follows you, it is noted, like this in your email (you need to activate email alert),

It is a wonderful feeling. If you want exposure, myBloglog delivers.
10th, myBloglog wants you to quit socialising after 15 messages. It sends you a friendly note, "go and enjoy the outdoors!". Before you have a pouch on your tummy, leave your seat and stretch out.
This is my personal recommendation:
In order to increase your presence in the social network, you need to focus on socializing not selling or marketing. Just because it is free and/or offers money, it is good. The social site may not be suitable for your purpose and personality as website builder. You need to keep working on the social site by adding, visiting and joining other communities. And as often as possible, be truthful and honest with your messages. Visit their websites and don't lie that you have. Remember your activities can be easily tracked; if you have visited, the website owner will know just by checking on his myBloglog stats or from tracking widgets on his websites. Take your time to send a genuine message, it is worth your while and you are making your contact happy.
Sucessful bloggers nowadays create blogsites on just one topic on blogger or other free blogs to increase their hit rate with search engines for their winning keywords. Look out for unpopular sites and you will be pleasantly surprised. The author can be the owner of the most creative and hot website in the internet. (Read RSS Alternatives below for research tips.)
If you do not enjoy your stay, consider subscribing to another social site because your absence does not make the hearts grow fonder on social sites. Help the members to decide to include you in their community. Promote yourself and tell them how you can become their good buddy.