through mutual adjustment”. Kavanaugh and Patterson (2001) did not find that increased Internet usage increased community involvement and attachment. According to Gilleard, C. et al. (2007), “ownership and use of domestic information and communication technology reduces the sense of attachment to the local neighborhood among individuals 50 and older in England.” But they continue that “domestic information and communication technology may be more liberating of neighborhood boundedness than destructive of social capital.” Anonymity is often mentioned in popular media as a possible cause for negative effects. But according to Bargh and McKenna (2004), anonymity also associated with positive effects: “research has found that the relative anonymity aspect encourages self-expression, and the relative absence of physical and nonverbal interaction cues (e.g., attractiveness) facilitates the formation of relationships on other, deeper bases such as shared values and beliefs.” Pigg and Crank (2004) suggest how Internet can facilitate interaction within members of community. They suggest a concept of “reciprocity transaction”, that implies that “one person provides something of value to another in expectation that, at some point in time, the other person will act similarly”. It is suggested that ICT supports reciprocity transaction by providing social support or valuable information not available to public, and share meaning. Shared presence combined with depth of information provides shared meaning (Miranda and Saunders, 2003). Internet usage is generally not associated with decline in social contact. For example, Katz, Rice, Aspden (2001) found that Internet users were more likely to communicate with others through other media (especially telephone) more than do nonusers, and Internet use was associated with greater levels of social interaction (although this was more widely dispersed). Thy claim, that “Internet use does not appear to weaken the fabric of neighborhoods and communities.” Ellison, Steinfield and Lampe (2007) claim that online interactions do not necessarily remove people from their offline world, but support relationships, especially when life changes move them away from each other. They say, that Internet “seems well-suited to social software applications because it enables users to maintain such ties cheaply and easily”. Internet-based communications is usually cheaper than phone, fax and letter-based communications, and are regarded as cheap to keep up with family and friends abroad (Foley, 2004), to keep up with business friends (e.g. Molony, 2009). Galston (1999) suggested an approach to analyze virtual communities based on entry and exist costs: “when barriers to leaving old groups and joining new ones