Don't download software from blogs and web sites without knowing if they are secure, if the software is malicious and...!!!
===> Update (28.02.2014): <===
“Potentially Unwanted Programs (PUP)” are a piece of software that is also downloaded when a user downloads a specific program or application. THEY are similar to malware in that it will cause problems when it is downloaded and installed. THEY can be very embarrassing as one doesn’t get rid of them with normal tools, one needs definitely to use special tools to remove them.
Freeware publishers offer their products for free, but bundle them with PUPs in order to earn revenue and users are unaware of these additional installations because ===> they do not read agreements thoroughly. <===
In case that this happens to YOU, check my FREE tutorials on #How-To remove them & to protect:
Here is a list of trustful download web sites:
HEISE (DE): http://www.heise.de/download/
ComputerBild (DE): http://www.computerbild.de/downloads/
Chip (DE): http://www.chip.de/Downloads_13649224.html
Clubic (FR): http://www.clubic.com/telecharger/
o1Net (FR): http://www.01net.com/telecharger/
Libellules (CH) with tutorials: http://www.libellules.ch/dotclear/
PC TIPP (CH): http://www.pctipp.ch/downloads/
Will get updated often, stay tuned :-)