What is the meaning of Threat levels?

The detected entries are flagged under three threat levels which are defined below.

High	:	The entries detected and which are flagged as high threat are those entries which can severely affect the performance of the PC if kept enabled on the PC. Windows and other applications keep looking for these entries thus affecting the performance of PC. Startup programs, Shared folder, Com/Activex,Shared Dll's and Deep scan entries come under this category.
Medium	:	The entries detected and which are flagged as medium threat are the entries which have moderate effect on the PC performance by their presence. Start Menu items, Fonts, Sound and App Events, Help file, Empty Registry Key come under this category.
Low	:	The entries detected and which are flagged as Low threat are those entries which have a very low effect on the PC by their presence. Windows/MS-Dos Shortcuts and MRU Entries, Cookies, URL History, Recycle Bin, Clipboard and Windows Application Log entries come under this category.