It is easy to come across a lot of installer and software around the internet. The only thinng that you need to consider is wether the installer provided is safe or harm.
It is important if you realize that some people will re-upload hack version of an installer. Maybe they will tweak its coding or put extra gift for you, that is either trojan or malware. So, it is really important to only download from trusworthy site.
Below is the 5 trustworthy download sites that I use.
- http://www.cnet.com or http://www.download.com
And lastly, you better scan first the file that you downloaded before installing it.