188.8.131.52 is a web crawler which identifies itself as "MSIE 6.0". It does not appear to care about the Robots Exclusion Standard or even try to read robots.txt.
184.108.40.206 is, according to Ripe, assigned to RoEduNet, Bucharest, Romania.
Fetches 10 pages at a time, waits about one minute, fetches 10 more.
 Software, usage
Unknow what software it really is since it uses only the User-Agent "MSIE 6.0". It is also unknown what the purpose of this crawler is - more likely spam than not.