6.2 Future Trends

	The evolution of POWEM is motivated (but not necessarily mandated) by the directions of evolution of the Web.
	POWEM can be extended in at least two orthogonal directions.

	One possible extension of the model is increasing the granularity of the quality attributes at the level Pragmatic-
	Tier 1, and thereby adding another level (say, Tier 0) underneath it. In that case, for example, fault tolerance and
	availability could be two quality attributes that belong to the level Pragmatic-Tier 0.

	Other possible extensions of the model are the use of patterns for improving higher- or lower level semiotic
	quality concerns.

Other possible extensions are:

Patterns in Social Web Engineering.

Patterns in Semantic Web Engineering.

	A pattern-oriented systematic approach for a development of mobile applications would be another future
	prospect. However, 'recasting' POWEM for mobile applications would neither be trivial, nor automatic. The
	constrained environment of mobile applications is uniquely different from that of the stationary (desktop)
	applications, and must to be taken into consideration.

Anti-patterns for quality of Web applications: It is defined as a combination of two aspects:

6.2 Future Trends

		First, for a recurring problem in a given context, there is a solution such that if this solution is applied, the
		system is placed in a state worse than it was previously.

		Second, to improve this, the "negative" solution is re-factored to a "positive" solution. If a pattern reflects a
		"best practice," then an anti-pattern reflects a "lesson learned".

		A pattern applied to an inappropriate context can compromise the benefit it offers and give the appearance
		of an anti-pattern. There is currently an apparent lack of stable and mature collection of anti-patterns for Web
		applications.