Should I trust these packages and ppas? [duplicate]

These PPA's you have mentioned are maintained by

• Webupd8
• Ubuntu-x-swat
• atareao

Webupd8 is quite a trusted site. They provide proper well made stable packages. Many people (Even me!) use their PPA's. You should not have a problem with their packages. See their home page

Ubuntu-x-swat is also a great team. Here also many people use it (Me also, again!). You can safely use it but do not forget to read the instructions here

atareao : I have never used their PPA but searching around on the net gives a hint that they are a bit trusted and also recommended by some sites.

Generally most PPA's you find should be stable with no "evil" in them. Just to be sure keep a point in mind to add a PPA only if some sites recommend them. Also make sure to add only stable version of a PPA. Some PPA's provide development versions which might thrash your PC if they are buggy. So in the end the choice is yours.

Its upto you whether you are going to trust any of the untrusted PPA's. I mean to say the risk level depends on youselves.