An example of ETF that concentrate on one or two hightech stocks in Canada is not a good idea. For example, for MER 0.55%, you are getting:
29% - RESEARCH IN MOTION
18% - NORTEL NETWORKS CORP
17% - CGI GROUP INC - CL A
10% - OPEN TEXT CORP
10% - CELESTICA INC
7% - MACDONALD DETTWILER & ASSOC
7% - TERANET INCOME FUND
2% - AASTRA TECHNOLOGIES LTD
39% of the portfolio are companies located at Waterloo, Ontario.
Becareful when you adding ETF into your portfolios.