Viesearch.com is pretty good site because I submit plenty of sites on it.
Yes Viesearch.com is a pretty good site, they are also very quick to reply regarding the status of the submitted link. The only problem I have with is that they send a lot of emails, hence I use some other email when submitting to them.
There are thousands of directory submission websites. vmoptions.com and directorycritic.com are commonly use, both these website have unlimited free directory submission websites... i am using both these website and its good for making back link.